Using special effects can enhance a trailer, but one of the most common mistakes is overloading it with excessive or flashy effects that overshadow the story. Trailers should not become showcases of impact at the expense of storytelling. Editors often need to focus more on visual spectacle with context. Subtle, well-integrated effects add value, whereas overuse can lead to visual fatigue for the audience. Ensuring that special effects support, rather than distract from, the narrative helps create a balanced and impactful trailer. Avoiding these common mistakes makes the trailer both visually appealing and narratively strong.